10, 20, 30 Rule of Thumb Method

[Bruce Gibson]

I recently stumbled upon something a contractor said on Facebook. He was stating to find the potential repair cost you must multiple the square foot by 10, 20, or 30 ($10 sq ft for a basic facelift, $20 sq ft for a moderate renovation, and $30 sq ft for a full gut rehab). I wanted to know how accurate this is and how it can be adjusted for my current market in Mississippi